A point-of-sale (POS) system is provided. The POS system may include an adjustable housing configured to receive a computing device. The POS system housing may be adjustable so that a screen of the computing device can be viewed by a merchant and a customer. The computing device may be removable from the housing for use as a mobile POS system. The POS system may also include electronics for accepting various forms of payment and for connecting the computing device to a network.

Disclosed are various embodiments for a light bulb or other type of lighting fixture that integrates a light source and a radio frequency identification (RFID) reader. Embodiments of the disclosure can also forward identifiers corresponding to RFID tags detected by the RFID reader to another computing device that can facilitate identification of products or items associated with the RFID tags. RFID tags are energized with interrogator signals and/or an electromagnetic field emitted from the RFID reader and submit a response, which can be forwarded, or data extracted and transmitted, to another computing device.

Disclosed are various embodiments for a light bulb or other type of lighting fixture that integrates a light source and a radio frequency identification (RFID) reader. Embodiments of the disclosure can also forward identifiers corresponding to RFID tags detected by the RFID reader to another computing device that can facilitate identification of products or items associated with the RFID tags. RFID tags are energized with interrogator signals and/or an electromagnetic field emitted from the RFID reader and submit a response, which can be forwarded, or data extracted and transmitted, to another computing device.

For each of a plurality of production facilities, a series of operations is performed. For each of a plurality of batches of a concrete mixture produced at the respective production facility based on a formulation, a first difference between a measured quantity of cementitious and a first quantity specified in the formulation is determined. A first standard deviation is determined based on the first differences. For each of the plurality of batches, a second difference between a measured quantity of water and a second quantity specified in the formulation is determined. A second standard deviation is determined based on the second differences. A first benchmark is selected from among the first standard deviations, and a second benchmark is selected from among the second standard deviations. An amount by which costs may be reduced by improving production at the production facility to meet the first and second benchmarks is determined.

For each of a plurality of production facilities, a series of operations is performed. For each of a plurality of batches of a concrete mixture produced at the respective production facility based on a formulation, a first difference between a measured quantity of cementitious and a first quantity specified in the formulation is determined. A first standard deviation is determined based on the first differences. For each of the plurality of batches, a second difference between a measured quantity of water and a second quantity specified in the formulation is determined. A second standard deviation is determined based on the second differences. A first benchmark is selected from among the first standard deviations, and a second benchmark is selected from among the second standard deviations. An amount by which costs may be reduced by improving production at the production facility to meet the first and second benchmarks is determined.

For each of a plurality of production facilities, a series of operations is performed. For each of a plurality of batches of a concrete mixture produced at the respective production facility based on a formulation, a first difference between a measured quantity of cementitious and a first quantity specified in the formulation is determined. A first standard deviation is determined based on the first differences. For each of the plurality of batches, a second difference between a measured quantity of water and a second quantity specified in the formulation is determined. A second standard deviation is determined based on the second differences. A first benchmark is selected from among the first standard deviations, and a second benchmark is selected from among the second standard deviations. An amount by which costs may be reduced by improving production at the production facility to meet the first and second benchmarks is determined.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for content presentation. In one aspect, a method includes receiving a request for a content item to be presented to a user; for a collection of content items, identifying one or more candidate content items including using image keywords derived from images associated with the user to identify the one or more candidate content items; selecting a content item responsive to the content request from the candidate content items; and sending the selected content item for presentation to the user.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for content presentation. In one aspect, a method includes receiving a request for a content item to be presented to a user; for a collection of content items, identifying one or more candidate content items including using image keywords derived from images associated with the user to identify the one or more candidate content items; selecting a content item responsive to the content request from the candidate content items; and sending the selected content item for presentation to the user.

A method and system for remotely exchanging weighment information via a wireless device, such as a cell phone, pertaining to a vehicle, such as truck, at a vehicle weight station. The system and method may include determining a present location of a vehicle to be weighed, verifying identification information of the vehicle to be weighed and receiving a vehicle weight from a server remote from the wireless device. The system and method may also include exchanging payment information between one or more servers and a wireless device.

A method and system for remotely exchanging weighment information via a wireless device, such as a cell phone, pertaining to a vehicle, such as truck, at a vehicle weight station. The system and method may include determining a present location of a vehicle to be weighed, verifying identification information of the vehicle to be weighed and receiving a vehicle weight from a server remote from the wireless device. The system and method may also include exchanging payment information between one or more servers and a wireless device.